WO2005099997A1 - Vacuum form encapsulated articles - Google Patents

Vacuum form encapsulated articles Download PDF

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Publication number
WO2005099997A1
WO2005099997A1 PCT/AU2005/000541 AU2005000541W WO2005099997A1 WO 2005099997 A1 WO2005099997 A1 WO 2005099997A1 AU 2005000541 W AU2005000541 W AU 2005000541W WO 2005099997 A1 WO2005099997 A1 WO 2005099997A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheets
core component
mould
deform
vacuum
Prior art date
Application number
PCT/AU2005/000541
Other languages
French (fr)
Inventor
John Richard France
Original Assignee
France (Qld) Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AU2004902001A external-priority patent/AU2004902001A0/en
Application filed by France (Qld) Pty Ltd filed Critical France (Qld) Pty Ltd
Publication of WO2005099997A1 publication Critical patent/WO2005099997A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/16—Lining or labelling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B32/00—Water sports boards; Accessories therefor
    • B63B32/57—Boards characterised by the material, e.g. laminated materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/16—Cooling
    • B29C2035/1616—Cooling using liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/04—Combined thermoforming and prestretching, e.g. biaxial stretching
    • B29C51/06—Combined thermoforming and prestretching, e.g. biaxial stretching using pressure difference for prestretching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/10—Forming by pressure difference, e.g. vacuum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/42—Heating or cooling
    • B29C51/428—Heating or cooling of moulds or mould parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/52—Sports equipment ; Games; Articles for amusement; Toys
    • B29L2031/5272—Surf boards

Definitions

  • THIS INVENTION relates to vacuum form encapsulated articles.
  • the invention has particular application to surfcraft, but is not limited to this field of use.
  • the present invention aims to provide a vacuum form encapsulated article which alleviates one or more of the disadvantages of the prior art.
  • Other aims and advantages of the invention may become apparent from the following description.
  • this invention in one aspect resides broadly in a method of forming an encapsulated article including: supporting a core component between two sheets of thermaLly deformable material in a vacuum forming mould having a cavity conforming to a shape larger than the core component when t he mould is closed; heating the sheeting to a temperature sufficient to deform the sheets; applying a first pressure differential across the sheets to deform at least one of the sheets into the cavity of t-he mould; closing the mould such that the two sheets are brouglnt together; applying a second pressure differential to the cozre component to deform the sheets against the outer surface of ttie core component ; cooling the encapsulated article; and opening the mould.
  • the mould is suitably a twin sheet or twin coating moulc ⁇ . Cooling of the article takes place prior to the opening of tt ⁇ e mould, but the encapsulated article may be allowed to cool further upon opening of the mould before being removed mechanically or by hand.
  • the cooling is effected by providing for the passage of temperature controlled water through aluminium tooling operatively associated with the moulc ⁇ .
  • the first and second pressure differentials arre applied by providing a source of vacuum to firstly deform one or both sheets into the cavity of the mould, and secondly,- the same vacuum is applied to the core component to deform the sheeting against the core component. Then, once the sheeting has been vacuumed onto the core, one or both sheets may, if necessary, be then vacuumed back to the tool shape.
  • the core component may be formed from one or more shape defining elements.
  • the core component preferably includes an expanded polystyrene core which may have a stringer along the central elongate axis according to established surfcraft manufacturing practice.
  • the present invention reside s broadly in a vacuum form encapsulated article including: one or more shape defining elements arranged to form a core component ,- and an encapsulating covering vacuum formed onto the external surface or surfaces of the core component; wherein the encapsulating covering is formed from two sheets of thermally deformable material vacuum formed to the core component substantially simultaneously with the weldiing of the sheets together.
  • the present invention resides broadly in a method of forming a vacuum form encapsulated! article including: providing one or more shape defining elements arzranged to form a core component ; providing an encapsulating covering formed from two sheets of thermally deformable material; aligning the encapsulating covering in relative disposition with respect to the core component for encapsulate,on thereby; heating the encapsulating covering to a. temperature sufficient to permit deformation thereof; applying a pressure differential across the encapsulating covering sufficient to deform the encapsulating covering onto the core component and bonding the sheets of thermal- ly deformable material together to form a substantially integral encapsulating covering on the external surface or surfaces of the core component .
  • the present invention resides broadly in a method of forming a surfcraft body including : supporting a surfcraft core component shaped substantially to a surfcraft form between two sheets of thermal_ly deformable material in twin sheet vacuum forming mould having a cavity conforming to a shape larger than the core component when the mould is closed; heating the sheeting to a temperature suffici_ent to deform the sheets ; applying a first pressure differential across the sheets to deform at least one of the sheets into the cavity of the mould; closing the mould such that the two sheets are brought together; applying a second pressure differential to the core component to deform the sheets against the outer surface of the core component ; cooling the encapsulated article; and opening the mould.
  • the surfcraft body Upon opening of the mould, the surfcraft body is allowed! to cool before being removed mechanically or by hand.
  • the first and second pressure differentials are applied by a source of vacuum to firstly deform one or both sheets into the cavity of the mould, and secondly, the same vacuum is applied to the surfcraft core component to deform the sheeting against the core component. Then, once the sheeting has been vacuumed onto the core, one or both sheets may, if necessary, be then vacuume ⁇ . back to the tool shape.
  • the surfcraft core component may includes a stringer, but it is believed that the structure of the surfcraft body being akin to a monocoque construction may obviate the necessity for a stringer.
  • the core component is preferably formed from expanded! polystyrene (EPS) , but may be any suitable material.
  • EPS expanded! polystyrene
  • the covering is preferably formed from a compatible material.
  • ASA high impact polystyrene
  • the materials off constructions would be selected from those which afford thermal, deformability, thermal weldability and/or thermal sinterability-
  • Fig. 1 is a diagrammatic sectional view illustrating the formation of vacuum form encapsulated article according to the invention.
  • Fig 1 shows a core component 11 disposed between two sheets of thermally deformable material, an upper sheet 12 and a lower sheet 13 mounted in between upper and lower temperature controlled tools 14 and 15 respectively.
  • the upper and lower temperature controlled tools are mounted to respective upper and lower mould assemblies 16 and 17, each having a vacuum port 18 and heat transfer fluid inlet and outlet ports 19 and 20 respectively whereby temperature control is effected by passing heat transfer fluid (in the present example, water) through passages (not shown) in the tools.
  • heat transfer fluid in the present example, water
  • Vacuum pins as shown at 21 are inserted into the core component to allow a vacuum to be applied thereto.
  • 10 removing inserts 22 are also included in operative relation with the core component .
  • the temperature controlled tools have shaped edge portions arranged to mate with one another and nip the upper and lower sheets together for welding together to one another.
  • the heated moving inserts weld off the openings in the weld line where the pins were inserted.
  • an EPS core is suspended mechanically between two sheets of plastic. The sheets of plastic are heated to their moulding temperature by normal means such as irradiation. These two sheets are then formed in the twin sheet tools by the vacuum and then the tools are forced together using pressure and thus creating a weld around the core and fusing the product together.
  • Vacuum is also applied during the weld or joining process to remove air from the EPS core.
  • the heated moving inserts are urged against one another, welding off the pin openings once the pins are removed. Cooling is effected by way of the tool being cooled by passing cooler heat transfer fluid through the tools. The tools are then separated where cooling can take place. The product is then removed manually or mechanically from the tools .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

A method of forming an encapsulated article including supporting a core component between two sheets of thermally deformable material in a vacuum forming mould having a cavity conforming to a shape larger than the core component when the mould is closed; heating the sheeting to a temperature sufficient to deform the sheets; applying a first pressure differential across the sheets to deform at least one of the sheets into the cavity of the mould; closing the mould such that the two sheets are brought together; applying a second pressure differential to the core component to deform the sheets against the outer surface of the core component; cooling the encapsulated article; and opening the mould.

Description

"VACUUMFORMENCAPSULATEDARTICLES"
-FIELD OF INVENTION
THIS INVENTION relates to vacuum form encapsulated articles. The invention has particular application to surfcraft, but is not limited to this field of use. BACKGROUND ART
The technique of vacuum forming elements has been practised in the art for at least fifty years, and vacuum forming a covering onto a former hias been practised in the art for nearly as long to form vacuum form covered articles. In order to provide a completely covered, or encapsulated, article, two or more sheet are used to cover separate, sometimes overlapping, portions of the exterior surface in two or more vacuum forming steps.
Subsequent to the use of wooden boards, the construction of surfcraft, such as s"urfboards, sailboards and the like, has involved coating a shape former of lightweight material, such as expanded polystyrene (EPS) with a composite resin, such as fibreglass. Such a technique is relatively labour intensive and can expose shapers to potentially harmful chemicals. However, the traditional technique remains popular because the finished board has a seamless coating with a smooth outer surface. Attempts to provide a mechanical process for the production of surfcraft have sometimes resulted in roughness on the surface, weaknesses in the coating, particularly around the inevitable seam, permitting ingress of water whereby the board can lose buoyancy and/or becomes sluggish to manoeuvre in the water.
The present invention aims to provide a vacuum form encapsulated article which alleviates one or more of the disadvantages of the prior art. Other aims and advantages of the invention may become apparent from the following description. DISCLOSURE OFTHE INVENTION
With the foregoing in view, this invention in one aspect resides broadly in a method of forming an encapsulated article including: supporting a core component between two sheets of thermaLly deformable material in a vacuum forming mould having a cavity conforming to a shape larger than the core component when t he mould is closed; heating the sheeting to a temperature sufficient to deform the sheets; applying a first pressure differential across the sheets to deform at least one of the sheets into the cavity of t-he mould; closing the mould such that the two sheets are brouglnt together; applying a second pressure differential to the cozre component to deform the sheets against the outer surface of ttie core component ; cooling the encapsulated article; and opening the mould. The mould is suitably a twin sheet or twin coating moulcϋ. Cooling of the article takes place prior to the opening of ttαe mould, but the encapsulated article may be allowed to cool further upon opening of the mould before being removed mechanically or by hand. Preferably, the cooling is effected by providing for the passage of temperature controlled water through aluminium tooling operatively associated with the moulcϋ. Preferably, the first and second pressure differentials arre applied by providing a source of vacuum to firstly deform one or both sheets into the cavity of the mould, and secondly,- the same vacuum is applied to the core component to deform the sheeting against the core component. Then, once the sheeting has been vacuumed onto the core, one or both sheets may, if necessary, be then vacuumed back to the tool shape.
The core component may be formed from one or more shape defining elements. For example, for a surfcraft, the core component preferably includes an expanded polystyrene core which may have a stringer along the central elongate axis according to established surfcraft manufacturing practice.
In another aspect, the present invention reside s broadly in a vacuum form encapsulated article including: one or more shape defining elements arranged to form a core component ,- and an encapsulating covering vacuum formed onto the external surface or surfaces of the core component; wherein the encapsulating covering is formed from two sheets of thermally deformable material vacuum formed to the core component substantially simultaneously with the weldiing of the sheets together.
In another aspect, the present invention resides broadly in a method of forming a vacuum form encapsulated! article including: providing one or more shape defining elements arzranged to form a core component ; providing an encapsulating covering formed from two sheets of thermally deformable material; aligning the encapsulating covering in relative disposition with respect to the core component for encapsulate,on thereby; heating the encapsulating covering to a. temperature sufficient to permit deformation thereof; applying a pressure differential across the encapsulating covering sufficient to deform the encapsulating covering onto the core component and bonding the sheets of thermal- ly deformable material together to form a substantially integral encapsulating covering on the external surface or surfaces of the core component . In another aspect, the present invention resides broadly in a method of forming a surfcraft body including : supporting a surfcraft core component shaped substantially to a surfcraft form between two sheets of thermal_ly deformable material in twin sheet vacuum forming mould having a cavity conforming to a shape larger than the core component when the mould is closed; heating the sheeting to a temperature suffici_ent to deform the sheets ; applying a first pressure differential across the sheets to deform at least one of the sheets into the cavity of the mould; closing the mould such that the two sheets are brought together; applying a second pressure differential to the core component to deform the sheets against the outer surface of the core component ; cooling the encapsulated article; and opening the mould.
Upon opening of the mould, the surfcraft body is allowed! to cool before being removed mechanically or by hand. Preferably^ the first and second pressure differentials are applied by a source of vacuum to firstly deform one or both sheets into the cavity of the mould, and secondly, the same vacuum is applied to the surfcraft core component to deform the sheeting against the core component. Then, once the sheeting has been vacuumed onto the core, one or both sheets may, if necessary, be then vacuumeσ. back to the tool shape. The surfcraft core component may includes a stringer, but it is believed that the structure of the surfcraft body being akin to a monocoque construction may obviate the necessity for a stringer. Of course, other surfcraft components may be moulded in to the surfcraft body, such as fin boxes, mast connector boxes, leg-rope connectors and such like- The core component is preferably formed from expanded! polystyrene (EPS) , but may be any suitable material. The covering is preferably formed from a compatible material. In the case off an EPS core component, it is preferred that ASA or high impact polystyrene (HIPS) sheeting be used. The materials off constructions would be selected from those which afford thermal, deformability, thermal weldability and/or thermal sinterability-
BRIEFDESCRIPTION OF THE DRAWINGS
In order that the invention may be more readily understood! and put into practical effect, reference will now be made to the accompanying drawings which illustrate a preferred embodiment of the invention and wherein: -
Fig. 1 is a diagrammatic sectional view illustrating the formation of vacuum form encapsulated article according to the invention. DETAILED DESCRIPTION OFTHE DRAWINGS
The method illustrated in Fig 1 shows a core component 11 disposed between two sheets of thermally deformable material, an upper sheet 12 and a lower sheet 13 mounted in between upper and lower temperature controlled tools 14 and 15 respectively. The upper and lower temperature controlled tools are mounted to respective upper and lower mould assemblies 16 and 17, each having a vacuum port 18 and heat transfer fluid inlet and outlet ports 19 and 20 respectively whereby temperature control is effected by passing heat transfer fluid (in the present example, water) through passages (not shown) in the tools.
Vacuum pins as shown at 21 are inserted into the core component to allow a vacuum to be applied thereto. 10 removing inserts 22 are also included in operative relation with the core component . The temperature controlled tools have shaped edge portions arranged to mate with one another and nip the upper and lower sheets together for welding together to one another. The heated moving inserts weld off the openings in the weld line where the pins were inserted. For example, an EPS core is suspended mechanically between two sheets of plastic. The sheets of plastic are heated to their moulding temperature by normal means such as irradiation. These two sheets are then formed in the twin sheet tools by the vacuum and then the tools are forced together using pressure and thus creating a weld around the core and fusing the product together. Vacuum is also applied during the weld or joining process to remove air from the EPS core. The heated moving inserts are urged against one another, welding off the pin openings once the pins are removed. Cooling is effected by way of the tool being cooled by passing cooler heat transfer fluid through the tools. The tools are then separated where cooling can take place. The product is then removed manually or mechanically from the tools .
Although the invention has been described with reference to one or more specific examples, it will be appreciated by persons skilled in the art that the invention may be embodied in other forms which are encompassed within the broad scope and ambit of the invention as claimed by the follow ng claims.

Claims

1. A method of forming an encapsulated articl-e including: supporting a core component between two sheets of thermally deformable material in a vacuum forming mould having a cavity conforming to a shape larger than the core conponent when the mould is closed; heating the sheeting to a temperature sufficient to deform the sheets; applying a first pressure differential across the sheets to deform at least one of the sheets into the cav ty of the mould; closing the mould such that the two sheets are brought together; applying a second pressure differential to the core component to deform the sheets against the outer surface of the core component; cooling the encapsulated article; and opening the mould.
2. The method according to Claim 1, wherein cooling of the article takes place prior to the opening of the mould.
3. The method according to Claim 1 or Claim 2, wherein the cooling is effected by providing for the passage of temperature controlled water through tooling operatively associated with the mould.
4. The method according to any one of the preceding claims, wherein the first and second pressure differencials are applied by providing a source of vacuum to firstly deform one or both sheets into the cavity of the mould, and secondly, the same vacuum is applied to the core component to deform the sheeting against the core component .
5. The method according to Claim 4, wherein, once the sheeting has been vacuumed onto the core, one or both sheets are then vacuumed back to the tool shape .
6. The method according to any one of Claims 1 to 5, wherein the core component is formed from one or more shape defining elements .
7. A vacuum form encapsulated article including: one or more shape defining elements arranged to form a core component ; and an encapsulating covering vacuum formed onto the external surface or surfaces of the core component ,- wherein the encapsulating covering is formed from two sheets of thermally deformable material vacuum formed to the core component substantially simultaneously with e welding of the sheets together.
8. A method of forming a vacuum form encapsulated article including: providing one or more shape defining elements arranged to form a core component; providing an encapsulating covering formed from two sheets of thermally deformable material; aligning the encapsulating covering in relative disposition with respect to the core component for encapsulation thereby; heating the encapsulating covering to a temperature sufficient to permit deformation thereof; applying a pressure differential across the encapsulating covering sufficient to deform the encapsulating covering onto the core component and bonding the sheets of thermall_y deformable material together to form a substantially integral encapsulating covering on the external surface or surfaces of the core component .
9. A method of forming a surfcraft body including: supporting a surfcraft core component shaped substantially to a surfcraft form between two sheets of thermall_y deformable material in twin sheet vacuum forming mould having a cavity conforming to a shape larger than the core compoixent when the mould is closed; heating the sheeting to a temperature sufficient to deform the sheets; applying a first pressure differential across the sheets to deform at least one of the sheets into the cavity of the mould; closing the mould such that the two sheets are brought together; applying a second pressure differential to the core component to deform the sheets against tlxe outer surface of the core component ,- cooling the encapsulated article; arxd opening the mould.
PCT/AU2005/000541 2004-04-16 2005-04-15 Vacuum form encapsulated articles WO2005099997A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2004902001 2004-04-16
AU2004902001A AU2004902001A0 (en) 2004-04-16 Single Step Process for Vacuum Form Covered Structural Elements

Publications (1)

Publication Number Publication Date
WO2005099997A1 true WO2005099997A1 (en) 2005-10-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2005/000541 WO2005099997A1 (en) 2004-04-16 2005-04-15 Vacuum form encapsulated articles

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WO (1) WO2005099997A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2006202239B2 (en) * 2005-05-26 2011-11-03 Ilona Magyar Moulding method
WO2013110115A1 (en) * 2012-01-23 2013-08-01 Mainline Industrial Corporation Pty Limited A process and apparatus for producing a laminated core product

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2534188A1 (en) * 1982-10-07 1984-04-13 Roux Joel Vacuum manufacturing process for sports boards, such as surfboards, sailboards, skateboards.
JPS60154019A (en) * 1984-01-20 1985-08-13 Sekisui Chem Co Ltd Manufacture of laminate
EP0422542A2 (en) * 1989-10-10 1991-04-17 Manville Corporation Apparatus and method for encapsulating contoured articles
WO1992009420A1 (en) * 1990-11-27 1992-06-11 Walter Rose Gmbh & Co Kg Process and apparatus for applying a plastics enclosure to surfaces that are to be protected
EP0520508A1 (en) * 1991-06-28 1992-12-30 CENTRO SVILUPPO SETTORI IMPIEGO S.r.l. Process for preparing thermo-insulating and/or structural double-walled molded bodies and products thereby obtained
US5201981A (en) * 1991-08-16 1993-04-13 Citadel Architectural Products, Inc. Method of forming synthetic plastic film-projected building siding
US5401456A (en) * 1987-10-07 1995-03-28 Formex Manufacturing, Inc. Method of forming a plastic unit having an outer plastic shell encapsulating a foam core
WO1999036250A1 (en) * 1998-01-13 1999-07-22 M 1 - Sporttechnik Gmbh Method for producing a tubular support structure
WO2002098637A1 (en) * 2001-06-01 2002-12-12 Meridian Automotive Systems, Inc. Thermoplastic sandwich panel and twin sheet moulding method of making same

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2534188A1 (en) * 1982-10-07 1984-04-13 Roux Joel Vacuum manufacturing process for sports boards, such as surfboards, sailboards, skateboards.
JPS60154019A (en) * 1984-01-20 1985-08-13 Sekisui Chem Co Ltd Manufacture of laminate
US5401456A (en) * 1987-10-07 1995-03-28 Formex Manufacturing, Inc. Method of forming a plastic unit having an outer plastic shell encapsulating a foam core
EP0422542A2 (en) * 1989-10-10 1991-04-17 Manville Corporation Apparatus and method for encapsulating contoured articles
WO1992009420A1 (en) * 1990-11-27 1992-06-11 Walter Rose Gmbh & Co Kg Process and apparatus for applying a plastics enclosure to surfaces that are to be protected
EP0520508A1 (en) * 1991-06-28 1992-12-30 CENTRO SVILUPPO SETTORI IMPIEGO S.r.l. Process for preparing thermo-insulating and/or structural double-walled molded bodies and products thereby obtained
US5201981A (en) * 1991-08-16 1993-04-13 Citadel Architectural Products, Inc. Method of forming synthetic plastic film-projected building siding
WO1999036250A1 (en) * 1998-01-13 1999-07-22 M 1 - Sporttechnik Gmbh Method for producing a tubular support structure
WO2002098637A1 (en) * 2001-06-01 2002-12-12 Meridian Automotive Systems, Inc. Thermoplastic sandwich panel and twin sheet moulding method of making same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 198538, Derwent World Patents Index; AN 1985-234465 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2006202239B2 (en) * 2005-05-26 2011-11-03 Ilona Magyar Moulding method
WO2013110115A1 (en) * 2012-01-23 2013-08-01 Mainline Industrial Corporation Pty Limited A process and apparatus for producing a laminated core product

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